When they came in, Mr. Harris ________ like a baby. Nobody would like to wake him from a good dream,

When they came in, Mr. Harris ________ like a baby. Nobody would like to wake him from a good dream, because he needed rest.

A.fell asleep

B.was sound asleep

C.got asleep

D.went to sleep

答案及解析： B

解析：

be sound asleep意为“睡得正香”。